2021 JMPSC Sprint Problems/Problem 16
Contents
[hide]Problem
is a concave quadrilateral with
,
,
, and
. Find the area of
.
Solution
Notice that and
by the Pythagorean Thereom. We then have that the area of triangle of
is
, and the area of triangle
is
, so the area of quadrilateral
is
.
~Mathdreams
Solution 2
Therefore,
- kante314 -
See also
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